finding obsolete gcc rpms

[lithophile]

Hi everyone! I've been a long time lurker here on these forums, but first time posting.

It's a long story, but I am attempting to install gcc-4.1.2-51.el5.x86_64.rpm to centos 5. It's an older version I know, which makes finding its dependencies a struggle.

Specifically, I am looking for libgomp-4.1.2-51.el5. I've checked everywhere I could think of (pbone, rpmfind, etc.) but i'm having a heck of a time on this treasure hunt.

Anybody know where I could find this and more generally, other older packages if needed?

Thanks!

[edited to correct a typo- it helps to know the correct version i'm looking for ]

[Irithori]

yum should be able to help you here.
I assume, you still have the standard centos repos.

Then s/th like this should do:

yum downgrade gcc-4.1.2-51.el5 libgomp-4.1.2-51.el5

You might need to add packages, if yum complains about dependencies.

[Rubberman]

Normally, you can install more than one version of gcc in a system. Anyway, libgomp is part of the OpenMPI though it is installed by default with you install RHEL 6.x. As to whether or not you HAVE to downgrade gcc and libgomp, I don't know for sure. You may need to install the 4.1.2 version of libgomp into an alternative location on the system, such as /usr/local/lib or /usr/local/lib64 instead of /usr/lib or /usr/lib64, if you want to use the 4.1.2 compiler and still keep the current (4.4?) compiler on the system.

[lithophile]

thanks, both of you! Strangely enough, I was able to make the gcc-4.1.2-51.el5.x86_64 install using libgomp-4.4.0-6. Not entirely sure why, since other more recent versions wouldn't work, but at least i'm out of dependency hell.

I should have mentioned that yum wasn't an option, because the computer hasn't been added to our network yet, thus no internet.

again- thanks!

[Irithori]

Here is the explanation, also determined on an centos5 machine:

rpm -q --requires gcc | grep libgomp
libgomp >= 4.1.2-50.el5

I am not a developer, so I cannot judge if that rather open dependency is just lazyness of the packager
or if it is OK-ish for developing to have any version of libgomp as long as it is newer than gcc.